Monitor Duplicating but Not Extending

Angela10 · 04-19-2026, 09:50 PM

I have four monitors set up and have recently installed the Targus Dock710.

I would like to extend to 4 displays.

I have downloaded the most recent driver from the DisplayLink website but for some reason my computer is only detecting 3 displays. It does however duplicate the 3rd display to my 4th monitor so there is nothing wrong with the cabling or connections.

I have clicked on each of the monitors in DisplayLink Manager and Windows display settings and ensured they are all set to extend. I have also tried detecting another display to no avail.

Can anyone help me extend from the 3rd monitor to the 4th.

04-19-2026, 09:50 PM	#1
Angela10 Junior Member Join Date: Apr 2026 Posts: 1	Monitor Duplicating but Not Extending I have four monitors set up and have recently installed the Targus Dock710. I would like to extend to 4 displays. I have downloaded the most recent driver from the DisplayLink website but for some reason my computer is only detecting 3 displays. It does however duplicate the 3rd display to my 4th monitor so there is nothing wrong with the cabling or connections. I have clicked on each of the monitors in DisplayLink Manager and Windows display settings and ensured they are all set to extend. I have also tried detecting another display to no avail. Can anyone help me extend from the 3rd monitor to the 4th.